adc.h

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/*
 * adc.h  -- Driver for NXP PCF50633 ADC
 *
 * (C) 2006-2008 by Openmoko, Inc.
 * All rights reserved.
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */

#ifndef __LINUX_MFD_PCF50633_ADC_H
#define __LINUX_MFD_PCF50633_ADC_H

#include <linux/mfd/pcf50633/core.h>
#include <linux/platform_device.h>

/* ADC Registers */
#define PCF50633_REG_ADCC3      0x52
#define PCF50633_REG_ADCC2      0x53
#define PCF50633_REG_ADCC1      0x54
#define PCF50633_REG_ADCS1      0x55
#define PCF50633_REG_ADCS2      0x56
#define PCF50633_REG_ADCS3      0x57

#define PCF50633_ADCC1_ADCSTART     0x01
#define PCF50633_ADCC1_RES_8BIT     0x02
#define PCF50633_ADCC1_RES_10BIT    0x00
#define PCF50633_ADCC1_AVERAGE_NO   0x00
#define PCF50633_ADCC1_AVERAGE_4    0x04
#define PCF50633_ADCC1_AVERAGE_8    0x08
#define PCF50633_ADCC1_AVERAGE_16   0x0c
#define PCF50633_ADCC1_MUX_BATSNS_RES   0x00
#define PCF50633_ADCC1_MUX_BATSNS_SUBTR 0x10
#define PCF50633_ADCC1_MUX_ADCIN2_RES   0x20
#define PCF50633_ADCC1_MUX_ADCIN2_SUBTR 0x30
#define PCF50633_ADCC1_MUX_BATTEMP  0x60
#define PCF50633_ADCC1_MUX_ADCIN1   0x70
#define PCF50633_ADCC1_AVERAGE_MASK 0x0c
#define PCF50633_ADCC1_ADCMUX_MASK  0xf0

#define PCF50633_ADCC2_RATIO_NONE   0x00
#define PCF50633_ADCC2_RATIO_BATTEMP    0x01
#define PCF50633_ADCC2_RATIO_ADCIN1 0x02
#define PCF50633_ADCC2_RATIO_BOTH   0x03
#define PCF50633_ADCC2_RATIOSETTL_100US 0x04

#define PCF50633_ADCC3_ACCSW_EN     0x01
#define PCF50633_ADCC3_NTCSW_EN     0x04
#define PCF50633_ADCC3_RES_DIV_TWO  0x10
#define PCF50633_ADCC3_RES_DIV_THREE    0x00

#define PCF50633_ADCS3_REF_NTCSW    0x00
#define PCF50633_ADCS3_REF_ACCSW    0x10
#define PCF50633_ADCS3_REF_2V0      0x20
#define PCF50633_ADCS3_REF_VISA     0x30
#define PCF50633_ADCS3_REF_2V0_2    0x70
#define PCF50633_ADCS3_ADCRDY       0x80

#define PCF50633_ADCS3_ADCDAT1L_MASK    0x03
#define PCF50633_ADCS3_ADCDAT2L_MASK    0x0c
#define PCF50633_ADCS3_ADCDAT2L_SHIFT   2
#define PCF50633_ASCS3_REF_MASK     0x70

extern int
pcf50633_adc_async_read(struct pcf50633 *pcf, int mux, int avg,
        void (*callback)(struct pcf50633 *, void *, int),
        void *callback_param);
extern int
pcf50633_adc_sync_read(struct pcf50633 *pcf, int mux, int avg);

#endif /* __LINUX_PCF50633_ADC_H */